Activation instrument for primary lithium battery

Abstract

An activation instrument for a primary lithium battery relates to the technical field of power supplies and comprises a working power supply, a control detection module, an activation resistor, a load resistor and a display module, and the power output end of the working power supply is electrically connected with the control detection module; the detection input end of the control detection module is electrically connected with the battery to be detected, and the control output end of the control detection module is electrically connected with the activation relay and the load relay. The input end of the activation resistor is electrically connected with the working power supply, and the output end of the activation resistor is electrically connected with the battery to be tested through the activation relay; the input end of the load resistor is electrically connected with the battery to be detected through the load relay, and the output end of the load resistor is electrically connected with the detection input end of the control detection module; the signal output end of the control detection module is electrically connected with the display module and the printer. The method has the advantages of detecting and accurately activating the primary lithium battery in advance.

Description

Technical Field

[0001] The utility model relates to the technical field of power supplies, in particular to an activator for primary lithium batteries. Background Technique

[0002] A primary lithium battery is a non-rechargeable disposable lithium battery. Although this lithium battery has advantages such as high specific energy, long life, leak resistance, low self-discharge rate, and good storage characteristics, it also has the negative characteristic of load voltage hysteresis. Voltage hysteresis will cause the working voltage of the battery not to immediately reach the required working state, and as the storage time of the battery increases, its hysteresis phenomenon becomes more obvious, especially for lithium batteries in the Li / SO2 and Li / SOCl2 systems;

[0003] Therefore, if some lithium batteries are directly installed in supporting equipment after long-term storage, it will take a long time to meet the index requirements, which restricts the technical preparation of the equipment and its rapid response speed; traditionally, the passivation film of the lithium battery is broken through by directly discharging, so as to activate the battery. However, due to the different rated voltages of lithium batteries of different models, if the discharge amount is too large, it is easy to cause the lithium battery to be damaged, and the error rate is relatively high;

[0004] Chinese Patent (CN1129311046B) discloses a lithium battery activation control device. This device regularly detects the current voltage signal of the lithium battery through a voltage detection circuit, and then the microprocessor judges whether the lithium battery is in a passivated state. If so, the activation circuit removes the passivation film on the lithium battery to prevent the problem of output voltage hysteresis when the lithium battery is in normal use; however, since this device regularly detects and activates the lithium battery in use, if a battery with a long storage time is replaced in the system, this activation control device will not immediately detect the state of the battery, so that the battery will work at a low working voltage for a period of time, thereby affecting the normal operation of the module;

[0005] Therefore, we need an activator that can detect and accurately activate primary lithium batteries in advance. Content of the Utility Model

[0006] In order to overcome the deficiencies in the background technique, the utility model discloses an activator for a primary battery pack.

[0007] To achieve the above-mentioned invention purpose, the utility model adopts the following technical scheme:

[0008] An activator for primary lithium batteries, comprising a working power supply, a control and detection module, an activation resistor, a load resistor and a display module. The power output end of the working power supply is electrically connected to the control and detection module;

[0009] The detection input end of the control detection module is electrically connected to the battery to be tested, and the control output end of the control detection module is respectively electrically connected to the activation relay and the load relay;

[0010] The input end of the activation resistor is electrically connected to the working power supply, and the output end of the activation resistor is electrically connected to the battery to be tested through the normally open switch of the activation relay;

[0011] The input end of the load resistor is electrically connected to the battery to be tested through the normally open switch of the load relay, and the output end of the load resistor is electrically connected to the detection input end of the control detection module;

[0012] The signal output end of the control detection module is respectively electrically connected to the display module and the printer.

[0013] Preferably, the working power supply is electrically connected to the control detection module through the operation panel, and the operation panel can input a control instruction signal to the control detection module.

[0014] Preferably, the battery to be tested is composed of multiple lithium battery branches, and the activation resistor, the load resistor, the activation relay and the load relay are all correspondingly set to be multiple. Among them, multiple activation resistors are respectively electrically connected to a lithium battery branch through the normally open switch of an activation relay, and multiple load resistors are respectively electrically connected to a lithium battery branch through the normally open switch of a load relay.

[0015] Preferably, the control detection module includes a multiplexer, a decoder, an A / D conversion unit, a main control unit, a display screen driving unit and a printer driving unit. Among them, multiple input ends of the multiplexer are respectively electrically connected to multiple lithium batteries in the battery pack to be tested one by one, the output end of the multiplexer is electrically connected to the decoder, the output end of the decoder is electrically connected to the main control unit through the A / D conversion unit, the control output end of the main control unit is respectively electrically connected to the activation relay and the load relay, the signal output end of the main control unit is electrically connected to the display module through the display screen driving unit, and the signal output end of the main control unit is electrically connected to the printer through the printer driving unit.

[0016] Preferably, an amplification and filtering unit is provided between the decoder and the A / D conversion unit.

[0017] Preferably, the main control unit uses a 109C51 series single-chip microcomputer.

[0018] Preferably, the display module uses an LQ035NC111 liquid crystal display screen.

[0019] Preferably, the working power supply uses a DC 6V uninterruptible power supply.

[0020] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0021] An activation instrument for primary lithium batteries disclosed by the present utility model

[0022] 1. By controlling the detection module, the open-circuit voltage of the battery under test can be detected, and then it can be judged whether there is a voltage lag in the battery under test. If so, the corresponding activation relay is controlled to start, so that the working power supply adopts a suitable voltage, and after passing through the activation resistor, the battery under test is accurately activated, thus not damaging the lithium battery;

[0023] 2. It can detect and activate multiple lithium battery branches at the same time, and also makes the activation efficiency of the battery under test higher;

[0024] 3. In addition, this activation instrument can perform activation operations before the battery under test starts to be used, so that after the battery under test is used in the load, there will be no voltage lag phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present utility model;

[0026] Figure 2 is a schematic structural diagram of the control detection module.

[0027] In the figure: 1. Working power supply; 2. Control detection module; 21. Multiplexer; 22. Decoder; 23. A / D conversion unit; 24. Main control unit; 25. Display screen driving unit; 26. Printer driving unit; 3. Activation resistor; 4. Load resistor; 5. Display module; 6. Printer; 7. Activation relay; 8. Load relay; 9. Operation panel; 10. Battery under test. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions of the present utility model will be described in conjunction with the drawings in the embodiments of the present utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or positional relationship, they are only corresponding to the drawings of the present utility model for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation:

[0029] Embodiment 1 is as follows:

[0030] Combined with the attached Figure 1-2 The activation instrument for primary lithium batteries described above includes a working power supply 1, a control detection module 2, an activation resistor 3, a load resistor 4, a display module 5 and a printer 6. The power output end of the working power supply 1 is electrically connected to the control detection module 2; particularly, the working power supply 1 adopts a DC 6V uninterruptible power supply, which has the characteristic of stable power supply and can ensure the stable operation of this activation instrument;

[0031] The detection input terminal of the control and detection module 2 is electrically connected to the battery 10 to be tested, and the control output terminal of the control and detection module 2 is respectively electrically connected to the activation relay 7 and the load relay 8;

[0032] The control and detection module 2 is used to detect the open-circuit voltage of the battery 10 to be tested, and then determine whether there is a voltage lag in the battery 10 to be tested. If so, the corresponding activation relay 7 is controlled to start, so that the working power supply 1 adopts an appropriate voltage, and after passing through the activation resistor 3, an accurate activation operation is performed on the battery 10 to be tested, so as not to damage the lithium battery. At the same time, the load relay 8 is started to determine whether the battery 10 to be tested is in a normal working state;

[0033] The input end of the activation resistor 3 is electrically connected to the working power supply 1, and the output end of the activation resistor 3 is electrically connected to the battery 10 to be tested through the normally open switch of the activation relay 7. Whether to perform an activation operation on the battery 10 to be tested is controlled by the activation relay 7;

[0034] The input end of the load resistor 4 is electrically connected to the battery 10 to be tested through the normally open switch of the load relay 8, and the output end of the load resistor 4 is electrically connected to the detection input terminal of the control and detection module 2. Through the load relay 8, it is possible to control whether the load resistor 4 performs a working state detection operation on the battery 10 to be tested. It should be noted that the load resistor 4 can consume the power of the battery 10 to be tested, so as to simulate the working environment of the battery 10 to be tested. At this time, by detecting the voltage on the load resistor 4, it is possible to determine whether the battery 10 to be tested is in a normal power supply state;

[0035] The signal output terminals of the control and detection module 2 are respectively electrically connected to the display module 5 and the printer 6. The display module 5 can display the state of the battery 10 to be tested detected, as well as the state of the battery 10 to be tested after the activation operation; the printer 6 can print the data of the above-mentioned state of the battery 10 to be tested on paper.

[0036] Embodiment 2 is as follows:

[0037] On the basis of Embodiment 1, the working power supply 1 is electrically connected to the control and detection module 2 through the operation panel 9. The operation panel 9 can input a control instruction signal to the control and detection module 2. Since it is determined whether there is a voltage lag in the battery 10 to be tested by comparing the open-circuit voltage of the battery 10 to be tested with the reference voltages of multiple models of the battery 10 to be tested preset in the control detection system, and the preset reference voltage parameters can be input and modified by the operator through the operation panel 9.

[0038] Embodiment 3 is as follows:

[0039] Based on Embodiment 1, the battery under test 10 is composed of multiple lithium battery branches. The activation resistors 3, load resistors 4, activation relays 7, and load relays 8 are all correspondingly set to be multiple. Among them, multiple activation resistors 3 are respectively electrically connected to a lithium battery branch through the normally open switch of an activation relay 7, and multiple load resistors 4 are respectively electrically connected to a lithium battery branch through the normally open switch of a load relay 8;

[0040] At this time, the control and detection module 2 will first detect the open-circuit voltage of each lithium battery branch in the battery under test 10 group, and then compare the open-circuit voltage with multiple reference voltages in sequence to determine the model of the battery under test 10 group. After that, according to the detected open-circuit voltage, it is judged whether the lithium battery needs to be activated. Finally, the corresponding activation relay 7 is started to activate the lithium battery. When the activation operation is completed, the activation relay 7 is disconnected, and the corresponding load relay 8 is started to judge whether the activated battery under test 10 is in a normal working state;

[0041] It should be noted that each lithium battery branch is of the same model, and the basis for determining the model of the battery under test 10 is as follows: Due to different pin definitions of different batteries under test 10, the states of the multiplexer switches 21 triggered are also different, so the reference voltages of different models of batteries under test 10 are obtained, and multiple reference voltages are preset in the control and detection module 2.

[0042] Embodiment 4 is as follows:

[0043] Based on Embodiment 3, the control and detection module 2 includes a multiplexer switch 21, a decoder 22, an A / D conversion unit 23, a main control unit 24, a display screen driving unit 25, and a printer driving unit 26. Among them, multiple input ends of the multiplexer switch 21 are respectively and correspondingly electrically connected to multiple lithium batteries in the battery under test 10 group. The output end of the multiplexer switch 21 is electrically connected to the decoder 22. The output end of the decoder 22 is electrically connected to the main control unit 24 through the A / D conversion unit 23. The control output end of the main control unit 24 is respectively electrically connected to the activation relay 7 and the load relay 8. The signal output end of the main control unit 24 is electrically connected to the display module 5 through the display screen driving unit 25. The signal output end of the main control unit 24 is electrically connected to the printer 6 through the printer driving unit 26; Among them, the main control unit 24 can realize the control of the activation relay 7 and the load relay 8, the driving of the display screen, the comparison of voltages, and the determination of whether the battery under test 10 is qualified;

[0044] In addition, in combination with Embodiment 2, the control process of the main control unit 24 is as follows: The battery under test 10 is connected to the main control unit 24. After the operator selects the corresponding number of the battery under test 10 on the liquid crystal screen, the decoder 22 and the multiplexer 21 select the model of the battery under test 10 connected. Then, the voltage of the battery under test 10 is connected. The analog signal obtained by the decoder 22 is converted into a digital signal that can be processed by the main control unit 24 through an A / D converter, that is, the open-circuit voltage;

[0045] It should be noted that during this period, the method of taking the average value by sampling multiple times is used to obtain the accurate numerical value of the open-circuit voltage signal and input it into the main control unit 24 for processing, and the number of times is 5 times, which can balance the sampling time and the detection time;

[0046] Next, the main control unit 24 first determines whether the battery under test 10 is selected incorrectly. The method is to compare the obtained state of the multiplexer 21 with the standard state predefined in the software. If it is determined that the selection is incorrect, an alarm is issued and reset;

[0047] If the selection is correct, then the obtained open-circuit voltage signal value is compared with the predefined standard voltage value range in the software. Qualified and unqualified are determined within the range defined by the technical requirements. If unqualified, it is stored and the detection is exited;

[0048] If it is qualified, the main control unit 24 issues a control signal to turn on the activation resistor 3, the activation relay 7 is energized and conducts, and at the same time, the set activation time is timed. When the time is up, a control signal to turn off the activation resistor 3 is immediately issued to turn off the activation relay 7; the activation time is generally 0 - 60s;

[0049] At the same time, the main control unit 24 issues a control signal to turn on the load resistor 4, so that the load relay (8) is energized and conducts. The load voltage of the battery under test 10 is sampled within the specified time. After the sampling is completed, the load resistor 4 is immediately disconnected to end the measurement; it should be noted that: the measurement time is the same as the activation time;

[0050] Then the main control unit 24 drives the liquid crystal display screen through the display driving unit to display the measurement situation and store the data;

[0051] The printing driving unit can only be triggered after the operator gives a printing command through the operation panel 9.

[0052] In addition, an amplification and filtering unit is provided between the decoder 22 and the A / D conversion unit 23, which can amplify and filter the analog signal output by the decoder 22.

[0053] Particularly, the main control unit 24 uses a 109C51 series single-chip microcomputer.

[0054] Preferably, the display module 5 uses an LQ035NC111 liquid crystal display screen.

[0055] In addition, it should be noted that the voltage input of the battery 10 to be tested adopts a DB25 plug, and the output of the control signals for the load resistor 4 and the activation resistor 3 adopts a 36-pin aviation plug, which has higher reliability.

[0056] The parts not detailed in the present utility model are prior art. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An activation device for a primary lithium battery, characterized in that: It comprises a working power supply (1), a control detection module (2), an activation resistor (3), a load resistor (4) and a display module (5), wherein the power output end of the working power supply (1) is electrically connected to the control detection module (2); The detection input end of the control detection module (2) is electrically connected to the battery to be tested (10), and the control output end of the control detection module (2) is electrically connected to the activation relay (7) and the load relay (8) respectively; The input end of the activation resistor (3) is electrically connected to the working power supply (1), and the output end of the activation resistor (3) is electrically connected to the battery to be tested (10) via the normally open switch of the activation relay (7); The input end of the load resistor (4) is electrically connected to the battery to be tested (10) through a normally open switch of a load relay (8), and the output end of the load resistor (4) is electrically connected to the detection input end of the control detection module (2); The signal output end of the control and detection module (2) is electrically connected to the display module (5) and the printer (6) respectively.

2. The primary lithium battery activation device according to claim 1, characterized in that: The working power supply (1) is electrically connected to the control detection module (2) via an operation panel (9), and the operation panel (9) is capable of inputting a control command signal to the control detection module (2).

3. The primary lithium battery activation device according to claim 1, characterized in that: The battery to be tested (10) is composed of a plurality of lithium battery branches, and the activation resistor (3), the load resistor (4), the activation relay (7) and the load relay (8) are each provided in a plurality, wherein the plurality of activation resistors (3) are respectively electrically connected to a lithium battery branch via a normally open switch of an activation relay (7), and the plurality of load resistors (4) are respectively electrically connected to a lithium battery branch via a normally open switch of a load relay (8).

4. The primary lithium battery activation device as claimed in claim 3, characterized in that: The control detection module (2) comprises a multi-way switch (21), a decoder (22), an A / D conversion unit (23), a main control unit (24), a display screen drive unit (25) and a printer drive unit (26), wherein the multiple input ends of the multi-way switch (21) are respectively electrically connected to the multiple lithium batteries in the battery group (10) to be tested, the output end of the multi-way switch (21) is electrically connected to the decoder (22), the output end of the decoder (22) is electrically connected to the main control unit (24) through the A / D conversion unit (23), the control output end of the main control unit (24) is respectively electrically connected to the activation relay (7) and the load relay (8), the signal output end of the main control unit (24) is electrically connected to the display module (5) through the display screen drive unit (25), and the signal output end of the main control unit (24) is electrically connected to the printer (6) through the printer drive unit (26).

5. The primary lithium battery activation device as claimed in claim 4, characterized in that: An amplification and filtering unit is provided between the decoder (22) and the A / D conversion unit (23).

6. The primary lithium battery activation device as claimed in claim 4, characterized in that: The main control unit (24) adopts a 109C51 series single chip microcomputer.

7. The primary lithium battery activation device as claimed in claim 1, characterized in that: The display module (5) adopts a LQ035NC111 liquid crystal display screen.

8. The primary lithium battery activation device as claimed in claim 1, characterized in that: The working power supply (1) adopts DC.

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